Valve for jarring-machines.



11. F. RINGLE.

VALVE POB. JARRING MACHINES.

APPLICATION FILED JUNE 27, 1911. v1 ,08 3 ,76 1 Patented Jan. 6, 1914,

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VALVE POR JARRING MAGHINBS.

APPLIoATIoN FILED m1112211, 1911.

1,083,761 Patentd-Jau, 1914.

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Mm fw W UNITED STATES PATENT oEEIoE.

ROBERT FRANKLIN INGLE, 0F ZELIENOIPLE, FENNSYLVANIA, ASSIGNOR. TOIHERMANPNEUMATIC. MAQHINE COMPANY, QF ZELIBNOPLE, PENNSYLVANIA, A CORPORA- TIQN0F PENNSYLVANIA.

vanvn For. Jan'uuamaomnrs.-

To all inkom 'it may concern Beit known that I, ROBERT FRANKLIN RINGLE,a resident of Zelienople in 'the county of Butler and State ofPennsylvania, have invented a new and useful Improvement in Valves forJarring-lllachines; and I do hereby declare the followin to be a full,clear, and exact description t ereof.

v My invention relates to molding machines, and hasspecial reference towhat are known as jarring machines for forming sand molds.

and'one which will he automatic in operation and constructed of few anddurable parts so that there will be practicallyno danger of said devicegetting out of order.

My invention consists, generally stated, in the novel arrangement,construction and combination of parts, as hereinafter more specificallyset forth and described and particularly pointed out in the claims.

To enable others skilled in the art lto which my invention appertains toconstruct and use my improved molding machine, I will describe the samemore fully, referring to the accompanying drawing, in which- Figure 1 isa central section of my improved molding machine showing the valve andplunger in one position. Fig. 2 is a central section of the valve andpart of. the plunger in its other position.

Like symbols of reference herein indicate like parts in each of thefigures of the drawing.

As illustrated in the drawing, 1 represents the base ofthe machine,which has the casing 2 of rectangular shape extending up` from the same,and within said casing and formed as part of the same is the cylinder 3.This cylinder 3 is positioned vertically within the casing 2 and has aseries of vertical wings 4 connecting the outer sides of the same withthe inner sides of said casing, while a cross wall 5 formed in theVlower end of said cylinder, and above the same is an opening throughwhich an operatingfluid, such as air, is admitted from the dif-'ferential control valve A for operating the same, while an operatingport 6 4is located in said cylinder directly above the opening Speccatonof Letters Batent.

Application led .Tune 27, 1911. Serial No. 635,673.

6, and safety ports 6" are located above said f operatin port and atintervals around the Same. Iithin the cylinder 3 and above the crosswall 5 therein is the plunger 7 which is provided with an exhaustopening 7 near the lower end of the. same for communicating at lntervalswith the opening 6 in cylinder 3, while said plunger is also providedwith an opening 7 above said c linder and dlametrically opposite to saidex aust opening, and sald plunger is connected at its .suc plate extendslover the top of the caslng 2 and is of rectangular shape in an invertedcup-shaped form, so that its outer annular flange 10 extending down fromthe outer edge of the same will lit around the upper edge of such casingwhen the plate 1s in its lowered position. Extending down from the underface 11, which is connected to the plunger 7 by a series of wings orribs 12 at each corner of the same and intermediate of said corners is apost or enlargement 13 extending around said flange from the bottom ofthe plate 9, to a point below said flange. Below each of theenlargements 13 is a jarring post or bracket 14 which is formed as partof and extends inward-from the inner face of the casing 2, and each ofsaid posts is provided with an angular rib l5 connpcting the bottom ofthe same with .the inner side of the casing. Within the upper face ofthe post s 14 is a seat 16 for the reception of a resilient jarringblock 17, preferably formed of rubber, or other suitable lexiblematerial, and fitting within said seat and against each of the upperfaces of said block is a wearing block plate 18, which extends above itsseat and is adapted to engage with the post 13 in line with the same inthe jarring operation.

Situated at a point substantially near the bottom of plunger 7 andconnected to the outer face of the cylinder 3 within the cas-- upplerend to a table or pattern plate 9, andv Patented Jan. e, 1914..

ing 2 is the di'erential control valve A which has its body 19 securedto said cylinder by bolts 2O passing through Hanges 21 to supportthesame. The valve body 19 is provided at its upper end with a top cover 22which tits over the same and is secured thereto by means vof the bolts2S, while the lower end of said body is provided with a bottom cover 24,which is secured thereto b y means of bolts 25 fitting into the same.Conf necting to the lower end of 'the bottom cover y communicates withthe opening 6 in the cylinder 3.

Immediately above the passageway29 in the valve casing or body 19 andcommunicating therewith is an exhaust opening 30 which leads into theexhaust chamber 31 immediately above the same, which is -provided withan exhaust pipe 31 leading therefrom, while a piston cylinder 32 locatedat the upper end of said valve body and is inclosed at its upper endwith the top cover 22 which has a recessed center 33 therein,

while said cover is also provided with a small recess 34 forcommunicating with a passageway 35 in said valve body, which4communicates with the opening 6 in the cylinder 3. In the upper end ofthe valve body 19 and opposite the piston cylinder 32 is an auxiliarycheck valve 36 which is mounted onpa spring 37, and the tension of suchspring is regulated by the valve cap 38, which bears against saidspring, while a passageway 39 leads in a horizontal direction from saidvalve to the passageway 35 in said body, and another passageway 40 leadsin a vertical direction from said valve to the passageway 35. Within thepassageway 35 and between the points where the passageways 39 and 40communicate with the same is a stroke regulating valve 41 which isadapted to be adjusted by the operator to regulate the length oi thestroke of the l plunger 7 in the cylinder 3.

Within the piston cylinder 32 is a valve device having a piston 42 whichoperates within the same and has a stem 42 extending downward from thesame through the exhaust chamber 31 and opening 30. This stem 42 isprovided at its lower end with a head or flanged portion 43, andterminates in a shank 44, which engagesl by the valve face 44 at itslower end with the inlet seat 27 inthe bottom cover 24. The head 43 hasa valve face 43 at the upper end of the same for engaging with a valveseat 30 above the passageway 29, and the piston 42 in the iston cylinder32 is provided with .the ordinary rings 45 around the same to -preventleakage of the operating fluid by piston in its lowered position such asis` shown in Fig. 2, the operating fluid enters through the supply pipe26.and raises the piston to a position such as shown in Fig.

1, whereupon said fluid passes through the inlet seat 27 andthrough thepassageways 28 and 29 and enters the cylinder 3 through the opening 6beneath the plunger 7 thereby raising said piston until the bottom ofthe same opens :the valve operating port 6 whereupon the operating fluidenters the passageway 35 and through the recess 34 and bears against theupper face of the piston forcing the same downward and shutting olf theoperating fluid supply, whereupon the plunger 7 1n the cylinder 3 willdrop down in said cylinder and the posts 13 on the table 9 will strikeupon the jarring post 14, wh'ile the fluid in said cylinder and belowsaid plunger will be expelled therefrom through the opening 6 in thecylinder 3, the passageway 29, the exhaust opening 30. the exhaustchamber 31, and linto the exhaust pipe 31. When the plunger 7'hasreached its lowered position in the cylinder 3 the exhaust opening 7 insaid plunger will communicate with the valve operating port 6 in thecylinder 3, thus allowing the fluid in the cylinder 32 to exhaustthrough the recess 34 and passageway 35 and said valve operating portand opening into the interior of said plunger, whence it is exhaustedfrom the opening 7 into the casing 2. The machine is now ready foranother operation and is accomplished in the manner described, so thatthe jarring is repeated untilthe sand in the mold is packed to therequired degree of solidity.

The length of the stroke of the plunger 7 in the cylinder 3 is regulatedby means of the stroke regulating valve 41, which is adapted t0 diminishand increase the amount of operating fluid which'passes through thepassageway 35, so that when said valve has been regulated so as to allowonly a small amount of the fluid to pass through the same beenaccomplished and the plunger 7 in the w.

cylinder 3 has been dropped to jar the same,

the fluid in the cylinder 32 will be expelled by the raising of thepiston 42 and to prevent the necessity of such fluid passing through thediminished regulating valve 41, for exhausting the same through theoperating port 6 in the cylinder 3 and exhaust opening 7 in the plunger,said fluid will enter the passageway 39 and will open the auxiliarycheck valve 36 and pass Idownward through the passageway 40 into thepassageway 35 and exhaust in the manner described. This auxiliary checkvalve 36 will thus prevent the necessity of the plunger 7 remaining inits lowered position until all the fluid in the cylinder 32 has beenexhausted throughthe regulating valve 4l when such valve has beenregulated to reduce the amount of fluid flowing through the same.,

In the use of my improved valve there is a great advantage over theordinary form of control of jarring machmes, in that, when a superfluousamount of the operating fluid` is admitted to thecylinder and under theplunger therein, there is no way of detecting this waste of energy, asthe fluid is all 'discharged almost instant-aneously from said;`

Ahad dropped the distance required lto allow the jarring of the mold,but the fluid in the cylinder which had not had time to escape wouldform a cushion vin said cylinder against which said plunger would dropso that there. would be no jarring by the plate striking the jarringblocks, and the operator will thus be warned to diminish the supply offluid to the cylinder.' It will also be readily seen that my improvedvalve is automat-ic and self contained and does not depend for itsoperation upon any hooks, levers, tripping devices, springs or anyexternal mechanism, and that since said valve is entirely inclosed nodirt or sand can come in contact with any of the working parts of thesame and thus cause injury..

The tiavel of the valve stem and piston is so small that there will bevery little jarring of the same, so that the wear thus occasioned willbe reduced to a minimum, and by the* arrangement of thejparts in my'improved valve, the plunger will be given a perfect upward and downwardstroke and will start upward -immediate-ly after the table has struckupon the jarring blocks, thus insuring an even and regular movement.

ing between said faces for allowing the ad-4 mission of operating fluidto said cylinder thro-ugh said port for raising said plunger. andadapted to be reversed by means of a,

piston abo-ve and connected to `said valve when said plunger has reachedits raised position, thereby cutting oft' the admission of fluid to saidcylinder to allow the fluid therein to exhaust through said -port andpermit said plunger to drop in said cylinder.

2. In combination with a jarring machine l having acylinder providedwith a port therein with an opening above the same and a plunger withinsaid cylinder, a valve casing connecting with said port and openinghaving opposed faces above and below said port, and a double-faced valvewithin said casing between said faces for allowing the admission ofoperating fluid to said cylinder through' said port for raising saidplunger and adapted to be reversed by means of a piston above andconnected to said valve when said plunger has reached its raisedposition, by the fluid passing through said opening, thereby cutting offthe admission of fluid to said .cylinder to allow the fluid therein toexhaust through said port and jermit said plunger to drop in said cylin-3. In combination with a jarring Inachine having 'a cylinder providedwith a port therein with an opening above said port and a plunger withinsaid cylinder, a valve casing connecting with said port and openinghaving opposed faces above and below said port, and a double-faced valvewithin saidcasing between said faces having la piston connected to theupper end thereof, said valve 'allowing the admission of o-peratingfluid to said cylinder through said port for raising said plunger andadapted to be vplunger to drop in said cylinder.

- 4. In combination with a jarring machine having a cylinder providedwith a port therein with an opening above said port and a plunger withinsaid cylinder, a valve cas-` 'loy ing connecting with said port andopening'- having opposed faces abo-ve and below saidv port, adouble-faced valve within said casing between said faceshaving a pistonconnected to the upper end thereof, and a passageway in said casingcommunicating with one end of said piston and opening, said valveallowing the admission of operating fluid to said cylinder through saidport for raising said plunger and adapted to be reversed when saidplunger has reached its raised position by the fluid passing throughsaid opening and passageway and above said piston, thereby cutting offthe admission of fluid t'o said cylinder to allo-w the fluid therein toexhaust through said port and permit said plunger to drop in saidcylinder.

5. In combination with a jarring machine having a cylinder provided witha port therein with an opening above said port and a plunger within saidcylinder, a valve casing connecting with said port and opening havingopposed faces above and below said port, a double faced Valvewithin'said casing between said faces having a piston connected to theupper end thereof, and a passageway in said casing communicating withone end of said piston Vand opening, another passageway in said casingcommunicating with said port, said valve being adapted to engage withthe upper face to allow the admission of operating fluid to saidcylinder through said last named passageway and said port for raisingsaid plunger and adapted to engage with the lower face when said plungerhas reached its raised position by said fluid passing through saidopening and first nalned passageway and above said piston, therebycutting off the admission of' fluid to said cylinder to allow the fluidtherein to exhaust through said port-and permit said plunger to drop insaid cylinder.

6. In combination with a jarring machine having a cylinder provided witha port therein with an opening above said port and a plunger within saidcylinder, a valve casing connecting with said port and opening havingopposed faces above and below said port, a valve within said casingbetween said faces having a piston connected to the upper end thereof,said valve allowing the admissio-nof operating fluid to said cylinderthrough said port for raising said plunger and adapted to be reversedwhen said plunger has reached its raised position byl the fluid passingthrough said opening and through a Jassav'ewa leading to one end-of 'D bY' said piston, thereby cutting offl the admission of fluid to saidcylinder to allow the fluid therein to exhaust through said port andpermit said plunger to drop in said cylder, and means in said assagewayto contro-l the rate of flow of fluid passing thro-ugh the same to lowersaid piston.

7. In combination with a jarring machine having a cylinder provided witha port therein with an opening above said port and a plunger within saidcylinder, a valve casing connecting with said port and opening, a valvewithin said casing having a piston at the upper end thereof', said valveallowing the admission of operating fluid to said cylinder through saidport for raising said plunger and adapted to be reversed when said`plunger has reached its raised position by the fluid passing throughsaid opening and through a passageway leading to one end of said piston,thereby cutting off the admission of fluid to said cylinder to allow thefluid therein to exhaust through Said port and permit said plunger todrop in said cylinder', and a stroke regulating valve in said passagewayto control the rate of flow of fluid passing through the same to lowersaid piston.

8. In combination with a jarring machine having a cylinder provided witha port therein with an opening above said port and a plunger within saidcylinder, a valve casing connecting with said port and opening, a valvewithin said casing having a piston at the upper end thereof, said valveallowing the admission of' operating fluid to said cylinder through,said port for raising said plunger and adapted to be reversed when saidplunger has reached its raised position by the fluid passing throughsaid opening and through a passageway leading to o-ne end of saidpiston, thereby cutting off the admission of fluid to said cylinder toallow the fluid therein to exhaust through said port and permit saidplunger to drop in said cylinder, means in said passageway to controlthe rate of `flow of fluid passing through the same to lower saidpiston, and a passageway communicating with said first named passagewayand on each side of said means and adapted to exhaust the fluid from theend of said piston on its upward stroke.

9. In combination with a jarring machine having a cylinder provided witha port therein with anpopening above said port and a plunger within saidcylinder, a valve casing connecting with said port and opening,v

a valve within said casing having a piston at the upper end thereof,said valve allowing the admission of' operating fluid to said cylinderthrough said port for raising said plunger and adapted to be reversedwhen saidl plunger has reached its raised position by the fluid passingthrough said opening and through a passageway leading to one end of saidpiston, thereby cutting off the admission 'of fluid to said cylinder toallow the fluid therein to exhaust through said yport and ermitsaidplunger todrop in said cylin er, means in said passageway to control therate of flow of fluid passing through the same to lower said piston, apassageway communicating with said first named passageway and on c'achside of said means, and a spring operated check valve in said last namedpassageway to permit the exhausting of the fluid through said passagewayfrom the end of said piston on its upward stroke.

